Turret-lathe.



G. J. FORSBERG.

TURRET LATHE.

APPLICATION FILED MAR-30, 1904.

4 SHEET-Fw-SHEBT 1.

' 2 Fig. 3

a mun swwu Witnesses: I Inventor M- a W.%si V W Attorney PATENTED MAY 22, 1906.

G. J. FORSBERG.

TURRET LATHE. APPLICATION FILED MAE-30. 1904.

4 SHEBTSSHEET 2.

Inventor I 'Witnesses? Attorney s No: 821,351.

PATBNTED MAY 22, 1906. Un J. FORSBERG.

TURRET LATHE.

APPLICATION FILED MAR. 30. 1904.

4 SHEETS-SHEET 3.

Inventor Witnesses: MAW/U618 M 5' MM.

Attorney PATENTED MAY 22, 1906.

Non 821,351.

C. J. FOESBERG. TURRET LATHE.

APPLICATION FILED MARHO. 1904.

4 SHEETS-SHEET 4.

Inventor 1 30mm W. 5228 Attorney Witnesses: 3012mm @QS M m. s (blow.

FFICE CARL J. FORSBERG, OF PLAINFIELD, NEW JERSEY, ASSIGNOR TO NILES- BEl\IEN'l-PON1) COMPANY, ()F JERSEY CITY, NEW JERSEY.

TURRET-LATHE.

Specification of Letters Patent.

"in-tented May 22, 1906.

Application filed March 30,1904. Serial No. 200,839.

To It mil/(mt l'fi ill/rt concern.-

Be it known that I, CARL J. ll ousenuc, a citizen of the United States, residing at Pia-infield, Union county, New Jersey, have invented certain new and useful Improvements in. Turret-Lathes, of which the following is a specification.

This invention, pertaining to improvements in turret-lathes and relating to mechanism for turning and arresting the turret, Will be readily understood from the following description, taken in connection with the accompanying drawings, in which Figure 1 is a plan of the turret-slide and its immediate accessories, partly appearing in horizontal section in the plane of line b of Fig. 2; Fig. 2, a vertical longitudinal section of the same in the plane of line a of Fig. 1;

- Fig. 3',a rear elevatlon of the turret, the bed appearing in vertical transverse section;

- Fig. 4, a vertical longitudinal section of the turret-slide and its immediate accessories in the plane of line 0 of Fig. 1 in conjunction with the adjustable block which operates the turret-releasing and turret-turning mechan- I ism; Fig. 5, an end elevation of the tail end of the bed, showing the turret-turning mechanism; Fig. 6, a plan of the same; Fig. 7, a diagram of the turret-turning mechanism, and Fig. 8 a rear elevation of the adjustable block.

In this machine, the turret-slide with its turret slides on the bed, impelled in any usual manner and by any usual means. The turret is turned automatically on its slide when moved to a certainpoint toward the tail end of the bed, and the feeding motion is automatically arrested when the turret is.

moved to selected distance toward the head stock. Where featuresmf construction are not particularly shown or described they may be assumed to be as usual in this class of machines.

, In the drawings, 1 indicates the lathe-bed; 2, the turret-slide sliding thereon; 3, the turret turning on the turret-slide and illustrated as being arranged for the reception of six turret-tools; 4, the usual arm supported by the bed between the turret-slide and headstock and designed when the turret-slide reaches it to effect the arrest of the further advance of the turret toward the head-stock. The arm 4 has a moderate motion and is con nected with any suitable device for interrupting the feed of the slide. After moving suf- Iiciently upon contact by one of the stoprods 8 (as hereinafter described) to stop the feed of the slide the arm 4 may be arranged to "bring up solid and act as a positive liXed stop, definitely arresting motion of the slide and turret at a determined point.

5 represents a volute cam fast with and turning with the turret, being disposed upon the lower portibn of the turret structure be low the top of the slide; 6, a transverse guideway carried by the turretslide; 7, a carriage moving on this guideway and capable of adjustment thereon transverse to the width of the lathe; 8, a series of long stop -rods mounted for endwise adjustment in the carriage 7, their ends toward the head-stock being adapted selectively to come into c0ntact with the stop-arm 4, there being one of these stop-rods for each of the turret-tools; 9, set-screws in the carriage 7 for holding the stop-rods therein in adjusted endwise relationship to the carriage; 10, a lever pivoted within the turret-slide and having one end coupled to the stop-rod carriage 7 and the other end provided with a roller engaging the cam 5; 11, a spring urging the roller of the lever toward the cam.

The relationof the cam and the stop-rods is to be such that at tne use of each tool of the turret an appropriate one of the stop-rods will be in line with arm 4 and impinge upon that arm. The turning of the turret to bring a given turret-tool into active position therefore. automatically brings the appropriate one of the stop-rods into ac ive position.

The stop-rods may be adjusted longitudi nally to suit the desired degree of feeding ad Vance desired for the particular turret-tool to which that stop-rod is appropriated Therefore when the turret advances the stop- .rod appropriated to the turret-tool in action will come into contact with the arm 4, resulting in the arrest of the feeding motion.

Proceeding with the drawings, 12 indicates the usual spring-bolt for locking the turret in adjusted angular position; 13, clamping-rings for clamping the turret firmly d own t0 the turret-sli .le; 14, a rock-arm pivoted in the tur-' ret-slide and having connection with the spring-bolt and clamping-rings and serving when rocked t0 the right to loosen the clamp ing-rings and then Withdraw the spring-bolt and permit the turret to be turned ;-15,,a

' 7 bolt and the tightening and adapte roller on a rock-arm rocking with arm 14; 16, another roller on a roek-arm rocking with arm 14, roller 16 being to the rear of roller 1 5 and the two being in different transverse planes; 17, a block longitudinally adjustable along the lathe-bed between the turret-slide and the tail end of the bed; 18, an incline carried by this block in the path of roller 1 5 as the turret-slide moves to the right; '19, a second incline tailwardly beyond incline 18 and similarly in the ath of roller 15; 20, a cam carried by the bloc intermediate of the inclines 18 and 19 and in the path of roller 16, and 21 the longitudinal T-shaped slot in the lathe-bed in which is adjusted and fixed the block 17.

- Referring to Fig. 4, the turret is to be assumed as being in working condition locked by the spring-bolt and firmly clamped by the clamp-rings. When the turret is to be turned to bring a new tool to position for use, the turret-slide is moved to the right, so the rollers can reach the block. Roller 15 first engages incline 18, with the result that arm 14 is rocked far enough to the right to loosen the clamp-rings. The continued tailward motion of the turret-slide causes roller 15 to ride u incline 19 and cause the further rock ing -0 arm 14 and the withdrawal of the spring-bolt, the turret being then at liberty to be turned. The movement of the rockarms as produced by the inclines has resulted in the swinging of roller 16 downwardly and to the left. The turret having been turned to desired position and the turret-slide started to the left, roller 16 ridesover' cam 20, wherethe rock-arms are restored to normal po sition, resulting in the engaging. of the s ringup of the 0 amprings. Particulars regarding the clampingrings 13 may be found in United States Letters Patent No. 736,792, of August 18, 1903. Proceeding with the drawings, 22 indicates a worm-gear fast with the turret; 23, a worm mounted in the turret-slide and engaging this gear; 24, a worm-shaft splined 1n the Worm and journaled at the tail end of the lathe; 25, a ower-shaft journaled .on the bed tion imparted to it by any appropriate means; 26, a gear loose on the power-shaft; 27, a friction-clutch by means of which gear 26 may be locked to the power-shaft; 28, a lever for engaging and releasing the frictionclutch; 29 a gear fast on the worm-shaft in the plane of gear 26; 30, an idle gear connecting gears26 and 29, the result of the arran ement thus far described bein that when t e turret is unclamped and un ocked and the friction-clutch thrown into engagement the turning of the power-shaft brings about the turning of the turret; free rotation, the illustration showing this gear as being'mounted on the end of the 32, a gear mounted for'loose roworm-shaft d 32 an entation; 33, a pinion fast with gear to have continuous rotary mo- 31, a gear mounted for gaging gear 31 34, a pinion fast with gear 29 and engaging gear 32; 35, a notch carried b gear 31, the illustration showing this note i as being formed in an annular flange projecting from the outer face of gear 31, and 36 a tooth carried by the clutch-lever 28 and adapted to enter notch 35 when the lever is in position corresponding with the released condition .of the friction-clutch, the tooth when in the notch serving to arrest the forward rotation of gear 31. Y

The proportion of the gearing ower-shaft and the worm-shaft is immaterial; but the proportion of the gearing between the turret and gear 31 is to be such that gear 31 will make one turn for each division of the turrctthat is to say, if the turret is arranged for siX tools then gear 31 is to make six turns for each turn of the turret. The tooth of .the clutch-lever occupies its notch when the turret is in a lar position and, the friction-clutch is released. If the clutch-lever be thrown outbetween the 1 working anguwardly, the result is, first, that the tooth be' comes released from its notch, thus leaving the worm-shaft free to be turned, and, second, that the friction-clutch is engaged, thus setting the power-shaft to work in turning The lever having been moved outwardly and the clutch thrown into engagement, gear 31 starts in its rotation, and thereafter the unnotched portion of the gear prevents the release of the clutchuntil the gear shall have again brought the notch to the turret.

the tooth. This rotation of the turret under the influence of the power-shaft will continue so long as the clutch-leveris in outward position and will cease when the lever is again put to clutch-releasing position, which can only be done when the notch comes opposite the tooth, this occurring each time the turning of the turret brings a turret-tool to working position. If the clutch-lever be thrown inwardly, the result is the disengagement of the clutch and the accurate locking of the worm-shaft in position corresponding with some operative position of the turret.

As thus far described we may assume a hand operation of certain parts. Suppose the turret to be unelamped'and unlocked an that it be desired to turn the turret one division. The clutch-lever may be thrown outwardly, thus releasing the tooth from the notch and at the same time en aging the clutch, whereupon the power-sha t proceeds to turn the turret. If new inward pressure be exerted upon the clutch-lever, such pressure will be ineffective until the notch reaches the tooth; but at that time the tooth will enter the notch and the clutch will be released and the motion of the turret arrested accurately in its new angular position. Such effect may be produced regardless of the position of the turret-slide along the v bed; but by mechanism to be'later described provision 821,331 are is made by which the turret-turning operation is automatically installed and arrested when the turret-slide is moved tailward upon the bed, so as to reach block 17.

Proceeding with the drawings, 37 indicates a tailwanlly-presenting finger carried by the turret-slide; 88, a spring-plunger carried by block 17 inthe path of finger 37 39, the plunger-spring urging the plunger toward the turret-slide; 40, a pin sliding in block 17 parallel with the plunger; 41, a pin projecting laterally from the plunger in position to engage the inner end of pin 40 42, a

lever pivoted to block 17 and extending crosswise of the lathebed, the rear end of this lever being in the path of pin 40; 43, a link pivoted to and extending inwardly from the end pf the U1UtGh,-IGVCI'; 44, a lever having one end connected with this link; 45, a rod pivoted to lever 44 and extending lengthwise of the lathe-bed and engaged adjustably by the forward end of lever 42; 46, a spring upon link 43, urging the clutch-lever to clutchreleasing position with its tooth to notch-engaging position; 47, a clamp device connecting the front end of lever 42 with rod 45 and permitting the lever to be connected with the rod in selective longitudinal position in accordance with the position in which block 17 is secured along the lathe-bed, and 48 a housing-plate for the support of the general mechanism at the tail end of the lathe-bed.

Normally the turret is locked and clamped and feeding to the left. When moved to the right, so as to be operated upon by block 17, the turret becomes unclamped and unlocked and free to be turned, as has been heretofore explained. A further movement of the turret-slide to the right causes finger 37 to engage the plunger and push it to the right, the spring of the plunger preventing shock as the turret-slide reaches its limit of mo tion. The rightward movement of the plunger results in the throwing of the clutch-lever to toothreleasing and clutch-engaging position, whereupon the turret becomes turned by the powershaft. The turret-slide having been started to the left leaves the clutch-lever quite free from its domination. The turning of the turret by power continues until gear 81 shall have made a full turn, whereupon spring 46 throws the tooth into its notch and releases the friction-clutch and arrests the further turning of the worm-shaft. The indexing effect of the tooth and notch-upon the turret is so accurate as to almost render the lockin -bolt dispensable.

I claim as myinvention 1. In a turret-lathe, the combination, substantially as set forth, with a bed, turretslide, turret, and feed-arresting arm, of a carriage mounted for sliding movement on the turret-slide in a direction. transverse to the length of the bed, a series of stop-rods mounted in said carriage parallel with each other and with the lathe-bed and adapted to cooperate selectively with the f eed-arresting arm, and operative connections between the turret and said carriage to shift the carriage in accordance with the turning of the turret.

2. Ina turret-lathe, the combination, substantially as set forth, with a bed, turretslide, turret, and feed-arresting arm, of a carriage mounted for sliding movement on the turret-slide in a direction transverse to the length of the bed, a series of stop-rods mounted in said carriage parallel with each other and with the lathe-bod and adapted to eoopcrate selectively with the feral-arresting arm, a cam fast with the turret and a lever pi vol ed on the turret-slide and having connections with said cam and carriage.

3. In a turret-lathe, the combination. substantially as set forth, with a bed, a turretslide, a turret, a power-shaft, and transmitting mechanism bctwecn the power-sha ft and the turret, of a clutch interposed in said transmitting mechanism, a rotary member geared to turn in harmony with the turret and carrying a notch, a clutch throwing member to serve in (-mgaging and releasing the clutch, and a tooth upon the clutchthrowing member in position to enter said notch when opposite thereto and permit the clutch-throwing member to throw the clutch to position of release.

4. In a turret-lathe, the combination, substantially as set forth, with. a bed, a turretslide, a turret, a power-shaft, and transmitting mechanism between the power-shaft and the turret, of a clutch interposed in said transmitting mechanism, a rotary member geared to turn in harmony with the turret and carrying a moving plain surface provided with a notch, a clutch-throwing member to serve in engaging and releasing the clutch, and a tooth upon the clutch-throwing member in position to enter said notch when opposite thereto and permit the clutchthrowing member to throw the clutch to position of release and adapted to bear against said plain surface when not opposite the notch.

'5. In a turret-lathe, the combination, substantially as set forth, with a bed, a turret' slide, a turret, a power-shaft, and transmitting mechanism between the power-shaf t and the turret, of a clutch interposed in said transmitting mechanism, a rotary member geared to turn in harmony with the turret and carrying a notch, a clutch-thrc wing member to serve in engaging and releasing the clutch, a tooth upon the clutch-throwing member in position to enter said notch when opposite thereto and permit the clutch throwing member to throw the clutch to position of release, and a spring urging the clutch-throwing member to clutch-releasing position.

6. In a turret-lathe. the combination, substantially as set forth, with a bed, a turretslide, a turret, a power-shaft, and transmitting mechanism between the power-shaft and the turret, of a friction-clutch interposed in said transmitting mechanism, a rotary member geared to turn in harmonv with the turret and carrying a notch, a clutch-throwing member to serve in engaging and releasing the clutch, and a tooth upon the clutchthrowing member in position to enter said notch when opposite thereto and permit the clutch-throwing member to throw the clutch to position of release.

7. In a turret-lathe, the combination, substantially as set forth, with a bed, a turretslide, a turret, a power-shaft, and transmitting mechanism between the powershaft and the turret, of a clutch interposed in said transmitting mechanism, a rotary member geared to turn in harmony with the turret and carrying a notch, a clutch-throwing member to serve in engaging and releasing the clutch, a tooth upon the clutch-throwing member in position to enter said notch when opposite thereto and permit the clutchthrowing member to throw the clutch to position of release, a rod extending lengthwise of the bed and having connection with the clutch-throwing member, a tailwardly-presenting projection carried by the turretslide, mechanism connected with said rod and disposed in the path of said rojection, and a spring urging the clutch-throwing member to clutch-releasing position.

8. In a turret-lathe, thecombination, substantially as set forth, with .a bed, a turretslide, a turret, a power-shaft, and transmitting mechanism between the power-shaft and the turret, of a clutch interposed in said transmitting mechanism, a rotary member geared to turn in harmony with the turret and carrying a notch, a clutch-throwing member to serve in engaging and releasing the clutch, a tooth upon the clutch-throwing member in position to enter said notch when opposite thereto and permit'the clutch-throwing member to throw the clutch to position of release, a rod extending lengthwiseof the bed and having connection with the clutchthrowing member, a tailwardly-presenting projection carried by the turret-slide, a member disposed in the path of said projection near said rod, means for locking said lastmentioned member to selective longitudinal positions upon said rod, and a spring urging the clutch-throwing member to clutch-releasing position.

9. In a turret-lathe, the combination, substantially as set forth, with a bed, a turretslide, a turret, a power-shaft, and transmitting mechanism between the power-shaft and the turret. of a clutch interposed in said transmitting mechanism, a rotary member geared to turn in harmony with the turret and carrying a notch, a clutch-throwing member to serve in engaging and releasing the clutch, a tooth upon the clutch-throwing member in position to enter said notch when opposite thereto and permit the clutch-throwing member to throwthe clutch to position of release, a rod extending lengthwise of the bed and having connection with the clutchthrowing member, a tailwardly-presenting projection carried by the turret-slide, mechanism connected with said roda'nd disposed in the path of said projection, a spring urging the clutch-throwing member to clutch-releasing position, and a spring-buffer acting between the turret-slide and the bed and adapted to be compressed by the turret-slide when the turret-slide moves tailwardly in the act of bringing said projection against said mechanism in its path.

1 0. In a turret-lathe, the combination, substantially as set forth, with a bed, a turretslide, a turret, a power-shaft, and transmitting mechanism between the power-shaft and the turret, of a clutch interposed in said transmitting mechanism, a rotary member geared to turn in harmony with the turret and carryinga notch, a clutch-throwing member to serve in engaging and releasing the clutch, a tooth upon the clutch-throwing member in position to enter said notch when opposite thereto and permit the clutch-throwing member to throw the clutch to position of release, a block adjustable lengthwise of the bed between its tail end andthe turretslide, a rod extending lengthwise of the bed and having connection with the clutch-throwing member, a movable member mounted on said block and having connection with said rod at selective points along the length of the rod, a tailwardly-presentin projection carried by the turret-slide an adapted to en'- gage the movable member on the block and shift the rod endwise, and a spring urging the clutch-throwing member to clutch-releasing position.

11. In a turret-lathe, the combination, substantially as set forth, with a bed, a turretslide, a turret, a power-shaft, and transmitting-gears between the power-shaft and the turret, a clutch between the power-shaft and the turret, a gear turned by the power-shaft" in harmony with the turret and carrying a notch, a clutch-throwing lever to serve in en gaging and releasing the clutch, and a'tooth upon the clutch-throwing lever in position to enter said notch when opposite thereto and permit the clutch-throwing member to throw the clutch to position of release.

12. In aturret-lathe, the combination, sub-, stantially as set forth, with a bed, a turretslide, a turret, a power-shaft 'forturning the turret, and a train of transmitting-gearing between the power-shaft and the turret, of a clutch interposed )etween the power-shaft and the turret, a gear connected with said transmitting-gearing between the clutch and 3 the turret and carrying a plain surface and a notch, a clutch-throwing lever, a spring urging said lever to clutch-releasing position, mechanism between the lever and the turretslide to cause extreme tailward movement of the turret-slide to throw the lever to clutchengaging position, and a tooth upon the clutch-lever bearing upon said plain surface when the clutch is engaged and entering said notch when opposite thereto and permitting the clutch to release.

13. The combination of a bed, a slide, a turret on said slide, power-driven means for revolving said turret, clutch means interposed in said poWer-drivenmeans, a revoluble gear member impelled by said power-driven means and arranged to rotate once fora fractional part of the revolution of said turret, a clutchthrowing member, a tooth thereon, and a notch on said revoluble member adapted to a be entered by said tooth.

14. The combination of a bed, a slide, a turret on said slide, power-driven means for revolving said turret, a clutch interposed in a clutch-throwing member actuated by the movement of said slide for engaging said clutch, means carried by said revoluble memher for engaging said clutch-throwing member and retainin said clutch in engagement for a determine period, and, means for releasing said clutch. a

15. The combination of a bed, a slide, a turret on said slide, power-driven means for revolving said turret, a clutch which may be engaged and disengaged interposed in said power-driven means, a revoluble member impelled bysaid power-driven means and having a definite speed of rotation with reference to that of said turret, means actuated by the movement of said slide for engaging said clutch, means carried by said revoluble memher for retaining said clutch in engagement for a determined eriod independent of the position of the sli e, and means independent of the slide fordisengaging said clutch.

16. The combination of a bed, a slide, a turret'on said slide,driving means for said turret, including gearing carried by the bed, and means acting upon amember of said gearing to lock said turret.

17. The combination of a bed, a slide, a turret on said slide, driving mechanism for the turret, including gearing carried by the bed, a device for controlling rotation of the turret applied to a portion of said gearing, and means actuated by motion of said sli e and coacting with said device for locking and unlocking the turret and for im arting rotative motion thereto through sai gearing.

18. The combination of a bed, a slide, a turret on said slide, a sto -block on the bed, a movable member on sai stop-block, driving means for said turret, including gearing carried on the bed, locking means acting through said gearing to normally hold said turret stationary with relation to said slide, additional locking means intermediate :said slide and said turret, means acting on contact with a member of said stop-block to release said additional locking means, and means acting on contact with the movable member on said block to release said locking means first mentioned;

19. The combination of a bed, a slide, a turret on said slide, driving means for said turret, including gearing carried on the bed, a clutch interposed in said turret-driving means, a turret-stop member carried by a member of said gearing, turret-sto means carried on the slide, a stop-block a justablyv mounted on the bed, clutch-operating means, a movable member on said block, connection between said movable member and said clutch-operating means, a member on sald slide adapted to engage said movable member on said block, and an actuating-arm connected with the turret-stop means carried on glie ilide, and arranged to contact with said CARL J FORSBERG.

Witnesses GrEO. B. WEAN, Jim. 0. FITZPATRIOK. 

